| viral transformation | <oncology, virology> Malignant transformation of an animal cell in culture, induced by a virus. (18 Nov 1997) |
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| viral vaccines | Suspensions of attenuated or killed viruses administered for the prevention or treatment of infectious viral disease. (12 Dec 1998) |
| viral vector | <molecular biology> Viral DNA that has been modified to serve as a vector for recombinant DNA. (11 Nov 1997) |
| viral wart | A keratotic papilloma of the epidermis which occurs most frequently in young persons as a result of localised infection by human papilloma virus, usually types 2 and 4; the lesions are of variable duration, eventually undergoing spontaneous regression, and are both exophytic and endophytic, with hyperkeratosis, parakeratosis, hypergranulosis, koilocytosis, and papillomatosis. Synonym: common wart, infectious warts, verruca simplex, viral wart. (05 Mar 2000) |
| cell transformation, viral | An inheritable change in cells manifested by changes in cell division and growth and alterations in cell surface properties. It is induced by infection with a transforming virus. (12 Dec 1998) |
| goose viral hepatitis | An acute, highly fatal disease of goslings and Muscovy ducklings caused by the goose parvovirus and characterised by anorexia, feather loss, and tissue haemorrhages. Synonym: Derzsy's disease. (05 Mar 2000) |
| meningitis, viral | Meningitis of viral origin usually due to picornaviruses, togaviruses, herpes viruses, paramyxoviruses, or arenaviruses. Symptoms include headache, malaise, nausea, fever, and neck stiffness. (12 Dec 1998) |
| chemical dermatitis | Allergic contact dermatitis or primary irritation dermatitis due to application of chemicals; usually characterised by erythema, oedema, and vesiculation of the exposed or contacted site. (05 Mar 2000) |
| rhus dermatitis | Contact dermatitis caused by cutaneous exposure to urushiol from species of Toxicodendron (Rhus), such as poison ivy, oak, or sumac. (05 Mar 2000) |
| RNA, viral | Ribonucleic acid that makes up the genetic material of viruses. (12 Dec 1998) |
| plant dermatitis | See: dermatitis venenata. Primary irritant dermatitis, a frequently cumulative reaction of irritation on exposure of the skin to substances which are toxic to epidermal or connective tissue cells; lesions are usually erythematous and papular, but can be purulent or necrotic, depending on the nature of the toxic material applied. (05 Mar 2000) |
| conjunctivitis, viral | Inflammation, often mild, of the conjunctiva caused by a variety of viral agents. Conjunctival involvement may be part of a systemic infection. (12 Dec 1998) |
| contact dermatitis | <pathology> A type of immune-mediated inflammatory skin rash that results from an allergy to a particular substance (for example jewelry dermatitis, poison ivy, neomycin ointment, etc.). (27 Sep 1997) |
| contact-type dermatitis | Dermatitis resembling contact dermatitis or eczema, but caused by an ingested or injected allergen, usually a drug, and with a widespread or generalised distribution. (05 Mar 2000) |
| contagious pustular dermatitis | A specific disease of sheep and goats, caused by the orf virus. This virus is transmissible to man and characterised by vesiculation and ulceration of the infected site. Synonym: contagious ecthyma, contagious pustular dermatitis, scabby mouth, soremouth. Origin: O.E. Orfcwealm, murrain, fr. Orf, cattle, + cwealm, destruction (05 Mar 2000) |